Thread-tensioning means



- J. BARNES THREAD TNSIONING MEANS Filed March 21, 1925 Patented Nov. 17, 1925.

UNITED STATES JOSEPH BARNES, OF NEVI BEDFORD,MASSACHUSETTS, ASSIGNORVVTO L., V. B. TENSION l PATENT 'ortica COMPANY, OF NEW BEDFORD, MASSACHUSETTS, A CORPORATION OF MASSACHU- SETTS.

THREAD-TENSIONING MANS.l

Application med March 21, 1925. serial No; 17,253.

To all whom t may concern.'

Be it known that I, Josnrn BARNES, a citizen of the United States, residing at New Bedford, in the county of Bristol, State of Massachusetts, have invented a certain new and useful Improvement in Thread-Tensioning Means, of which the following is a specitication, reference being had therein to the accompanying' drawings'.

The invention relates to tension devices such as those which are used forimparting the necessary tension to yarns, threads, and the like, in being wound, etc. f

j The invention has been designed, priinarily, for application in connection with tension devices of the type of those shown, described, and claimed, in U. S. Letters Pat# ent No. 1,356,026, dated Oct. 19, 1920, and No. 1,393,926,dated Oct. 1S, 1921.- Such tension devices comprise, essentially, a presserlever, a presser carried by such lever and arranged to coact with a backing surface in 'connection with the head of the tension device; and a tension-weight applied to the lever and adjustable upon the lever to varyy vice comprising the said embodiment, to-` gether with its supporting bracket or stand. such view showing also a `supply bobbin and a Vreceiving spool.

`Fig. 2 is a top View of the head portion of the tension device.

Fig. 3 isa sectional detail view of ther supporting-head, presser-lever, and presser, the section being on line3-3 ofvFig. 2.

Fig. 4 is a sectional detail view, of the presser-lever and weight, the Vsection being on line 1e-et of Fig. 1. y

Having referenceto the drawings,-

1 is the head of the illustrated tension device, 2 is a presser-lever that is pivotally -Inounted upon'the said head. at one side ofl the latter, byvmeans of a pivot 3. and 4 is a presser that is pivotally mounted upon the said presser-lever by `means of a pivot 5. A tensionweight 6 applied to presser-lever 2 governs thepressure of the presser upon at yarn m-passing between the presser and a backing surface 7 with which the head 1 isV furnished. 8 is a yarn-guide with which the head is provided, in advance of the presser and in line therewith', and through which the yarn or thread passes on its way fromv a second portion thereof adapted to constia tute a journal on which thev presser is mounted pivotally and a thirdV portion adapted to constitute a carrying arin for the tension-weight, etc. 'A presserlever 2 conL structed in accordance with. the present inf vention is made of sheet material, usually metal, withv a hole 21, Fig. 1, for the reception of a lever-pivot, a hole 22 for the reception of a presser-pivot, and a slot 23 providing for adjustable mounting of a ten# sion-weight. The lever-pivot 3 is .engaged with the head 1 and in the hole mentioned first; the presser-pivot 5 vis enga-ged in the other hole; and the slot 23 is utilizedfor the attachment-*of the tension-weight 6 to the presser-lever, and for the adjustment of the said weight upon. thelever with reference' to the pivot 3 of the presser-lever to vary the effective, leverage of they weight. The improvedVpresser-lever may be made veniently as a'stamping. n

The preferred mode of .mounting the presser-lever upon the head of the tension device, constitutingone of the features of improvement*comp rised in the invention, consists in ixedly connecting the. pivotal stud 3 with the presser-lever 2 in such 'relation therewith as to projectv transversely therefrom, making the yhead, with a transverse hole 11` Fig. 3, kto serve as a presser-y bearing, and entering the stud into the transverse hole 11 to serve as aj journal.y In this instance, one end of stud 3 is fxedly secured in the yappropriate hole in the presser-lever, as by 'riveting the said end in the/said hole. To retain the journal n'thbearing and conl Cil prevent accidental transverse displacement of the presser-lever and presser, a threaded axial hole is bored and tapped in the free end of the stud, and the stem oi a iianged screw 9 is screwed into the said hole, with the flange of the said screw engaged around the end of hole 11 at the side of head 1 opposite that at which the presser-lever is located.

The preferred mode of mounting the presser upon the presser-lever;` constituting one of the features of improvementcomprised' in the invention, consists in iiredly attaching` the pivotal stud 5 to the presserlever 2 in such relation thereto as to project transversely from the presser-lever crosswise of the backing surface of the head 1, and utilizing such stud as a- Iiournal upon which the presser may swivel in a plane at .right angles with the said backing surface. 1n this instance, one end of stud 5 is placed in one of the holes in the presser-lever and made fast therein, as by riveting such end, as in Fig. 3. In this instance, also, the presser is of the form presented in Patent No. 1,393,926, it comprising a shoe 19 by which the presser is mounted upon the journal-stud 5, and a spring strip 2O which is attached at one end thereof to` an extension of shoe 19 and bent so as to extend beneath the shoe. between the shoe and the backing surface with which the presser coacts, from one end of the shoe to the other end thereof, where its free extremity is bent up close to the latter end of the shoe. rEhe acting portion of the spring strip is shown formed into transverse ribs 24, 24, to. malte contact with the backing surface or the yarn or thread passing between such surface and the shoe, as in Patent No. 1,393.926'. yl`he shoe 19 is made of a strip of fairly stii' spring metal, folded upon itself with its two limbs close together, and shaped to form a bearing 25 for the reception of' journal-stud 5. The presserv is applied to the iournal` stud by slipping the presser edgewise, lengthwise of the stud., so that the stud shall enter the said bearing. The presser may be held from accidental. lateral displacement upon the journal-stud in any approvedmanner, but a further feature of improvement consists in providingagainst such accidental displacement by means of an enlarged shoulder 51 upon the. stud 5 at a distance from` the presser-lever suitably proportioned to the width of the; shoe 19 to enable such shoulder to be located alongside but` outside. the shoe. The bearing formed between the two limbs of the elastic shoe is slightly smaller in diameter than the enlarged shoulder'. As, the; said bearing is passed over the iournalfstud, the shoulder spreads the two. limbsk apart somewhat. Asthe shoe conlpletelyf' passes. the shoulder, the` twov limbs of. the elastic shoe; close toward, each, other around the smaller body of theiournalstud- The shoulder operates to prevent displacement of the shoe in the reverse direction under normal working conditions. Sutlicient force exerted manually will enable the shoe to be removed from the journal-stud, and thereby disengaged from the presserlever, when desired. rlhe said smaller body of the journal-stud is shown as made barrel-shaped to provide for lateral rocking of the pressershoe, as in my application for U. S. Letters Patent tiled July 10, 1923.

Referring now to the improvement in the mea-ns of adjustably mounting' the weight upon the presser-lever, the slot 23 in the presser-lever extends lengthwise of the presser-lever below the pivot 3, at both sides of the said pivot. r1`hc stem of the weightsecuring screw 61 occupies the said slot, the portion of such stem which is within the slot being slabbed olf at opposite sides there of for engagement with the sides of the slot to prevent the screw from turning'. The screw-head is lipped or fianged at the side of the presser-lever adjoining the head 1 of the tension device, for engagement with such side. A threaded hole 63 in the weight G receives the threaded stem of the screw 61. The weightl 6 is applied to the projecting stem of the screw, at the outer side of the presser-devel', and is screwed up tightly against such side, so as to clamp the pressen lever firmly between the lips or flanges of the screw and the weight, to hold the weight at the point to which it has been adi usted'. The slot 23 permits the weight to be shifted relative to pivot 3 to secure the desired effect of the presser upon the yarn or thread passing` between the presser and the backing' surface 7.

The backing surface 7 in the case of the embodiment of the features of; the invention that is shown in the drawings is constituted by the top surface of a wear-plate thatV is let into. a recess in the 'tace of the heady 1, as shown and described in Pat-ent No. 1,393,926, aforesaid.

That is claimed as my invention is :n-

1. A tension device of the character described comprising a head; a presser-lever of sheet-material formed with a hole for a lever-pivot, a hole for a presser-pivot, and a slot providing for adjustable mounting of a tension-weight; a. lever-pivot engaged with the said head and in one of said holes;v a presser-pivot engaged in the other hole.; a presser mounted upon the. presser-lever by means of the presser-pivot and cooperating with a backing surface in connect-ion with the head; and a weight havingsecuring means occupying said slot and` adiustable alongl the. samere'lative to the lever-pivot toA vary the effective. leverage-of the weight.

2. A tension device ofthe character cle-- scribed` comprising a headwhavrng apresser,`

bearing, a presser-lever of sheet inaterial having an attached lever-pivot occupying the said presser-hearing in the head, and an attached presser-pivot. and also having a slot providing for adjustable mounting of a tension-Weight; a presser having' a bearing' which fits upon said presser-pivot; a Weightsecuring screw occupyingl the said slot,

langed at one side of the presser-lever to ent gage with the latter at said side; and a tension-Weight screwing upon the screw-stein at the other side of the presser-lever into engagement With the latter at such side.

3. A' tension device of the character described coinprising a. head, a presser, a presser-carrying lever having an adjustment slot, a Weight-securing screw occupying such slot, flanged at one Side of the presser-lever to engage with the latter at Such side, and a tension-Weight screwing upon the screw-stein at the other side of the presser-lever into engagement With the latter at such side, the slot permitting' adjustment of the tension- Weight relative to the lever-pivot to vary the effective leverage or" the tension-Weight.

JOSEPHy BAR-NES. 

